| Pressure effects on magnetic properties and martensitic transformation of Ni–Mn–Sn magnetic shape memory alloys |
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| 引用本文： | 张雅卓,曹伽牧,谭昌龙,曹一江,蔡伟.Pressure effects on magnetic properties and martensitic transformation of Ni–Mn–Sn magnetic shape memory alloys[J].中国物理 B,2014(3):530-534. |
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| 作者姓名： | 张雅卓 曹伽牧 谭昌龙 曹一江 蔡伟 |
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| 基金项目： | Project supported by the New Century Excellent Talents in Heilongjiang Provincial University,China(Grant No.1253-NCET-009);the Youth Academic Backbone in Heilongjiang Provincial University,China(Grant No.1251G022);the National Natural Science Foundation of China(Grant Nos.50901026 and 51301054) |
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| 摘 要： | The mechanism for the effects of pressure on the magnetic properties and the martensitic transformation of Ni-Mn- Sn shape memory alloys is revealed by first-principles calculations. It is found that the total energy difference between paramagnetic and ferromagnetic austenite states plays an important role in the magnetic transition of Ni-Mn-Sn under pressure. The pressure increases the relative stability of the martensite with respect to the anstenite, leading to an increase of the martensitic transformation temperature. Moreover, the effects of pressure on the magnetic properties and the martensitic transformation are discussed based on the electronic structure.
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| 关 键 词： | 马氏体相变温度 磁性形状记忆合金 相变压力 磁性能 第一原理计算 奥氏体状态 相对稳定性 电子结构 |
Pressure effects on magnetic properties and martensitic transformation of Ni-Mn-Sn magnetic shape memory alloys |
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| Abstract: | ferromagnetic shape memory alloys, magnetic properties, martensitic transformation, electronicband structure |
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| Keywords: | ferromagnetic shape memory alloys magnetic properties martensitic transformation electronic band structure |
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